1 files changed, 37 insertions, 22 deletions

diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c
index 4af8fc0..4415eb4 100644
--- a/net/bluetooth/l2cap.c
+++ b/net/bluetooth/l2cap.c
@@ -272,6 +272,24 @@ static void l2cap_chan_del(struct sock *sk, int err)
 		parent->sk_data_ready(parent, 0);
 	} else
 		sk->sk_state_change(sk);
+
+	skb_queue_purge(TX_QUEUE(sk));
+
+	if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM) {
+		struct srej_list *l, *tmp;
+
+		del_timer(&l2cap_pi(sk)->retrans_timer);
+		del_timer(&l2cap_pi(sk)->monitor_timer);
+		del_timer(&l2cap_pi(sk)->ack_timer);
+
+		skb_queue_purge(SREJ_QUEUE(sk));
+		skb_queue_purge(BUSY_QUEUE(sk));
+
+		list_for_each_entry_safe(l, tmp, SREJ_LIST(sk), list) {
+			list_del(&l->list);
+			kfree(l);
+		}
+	}
 }
 
 /* Service level security */
@@ -345,8 +363,12 @@ static inline void l2cap_send_sframe(struct l2cap_pinfo *pi, u16 control)
 	struct sk_buff *skb;
 	struct l2cap_hdr *lh;
 	struct l2cap_conn *conn = pi->conn;
+	struct sock *sk = (struct sock *)pi;
 	int count, hlen = L2CAP_HDR_SIZE + 2;
 
+	if (sk->sk_state != BT_CONNECTED)
+		return;
+
 	if (pi->fcs == L2CAP_FCS_CRC16)
 		hlen += 2;
 
@@ -438,10 +460,23 @@ static void l2cap_send_disconn_req(struct l2cap_conn *conn, struct sock *sk)
 {
 	struct l2cap_disconn_req req;
 
+	if (!conn)
+		return;
+
+	skb_queue_purge(TX_QUEUE(sk));
+
+	if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM) {
+		del_timer(&l2cap_pi(sk)->retrans_timer);
+		del_timer(&l2cap_pi(sk)->monitor_timer);
+		del_timer(&l2cap_pi(sk)->ack_timer);
+	}
+
 	req.dcid = cpu_to_le16(l2cap_pi(sk)->dcid);
 	req.scid = cpu_to_le16(l2cap_pi(sk)->scid);
 	l2cap_send_cmd(conn, l2cap_get_ident(conn),
 			L2CAP_DISCONN_REQ, sizeof(req), &req);
+
+	sk->sk_state = BT_DISCONN;
 }
 
 /* ---- L2CAP connections ---- */
@@ -734,7 +769,6 @@ static void __l2cap_sock_close(struct sock *sk, int reason)
 				sk->sk_type == SOCK_STREAM) {
 			struct l2cap_conn *conn = l2cap_pi(sk)->conn;
 
-			sk->sk_state = BT_DISCONN;
 			l2cap_sock_set_timer(sk, sk->sk_sndtimeo);
 			l2cap_send_disconn_req(conn, sk);
 		} else
@@ -1415,6 +1449,8 @@ static int l2cap_ertm_send(struct sock *sk)
 	u16 control, fcs;
 	int nsent = 0;
 
+	if (sk->sk_state != BT_CONNECTED)
+		return -ENOTCONN;
 
 	while ((skb = sk->sk_send_head) && (!l2cap_tx_window_full(sk))) {
 
@@ -3072,7 +3108,6 @@ static inline int l2cap_config_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hdr
 		}
 
 	default:
-		sk->sk_state = BT_DISCONN;
 		sk->sk_err = ECONNRESET;
 		l2cap_sock_set_timer(sk, HZ * 5);
 		l2cap_send_disconn_req(conn, sk);
@@ -3126,16 +3161,6 @@ static inline int l2cap_disconnect_req(struct l2cap_conn *conn, struct l2cap_cmd
 
 	sk->sk_shutdown = SHUTDOWN_MASK;
 
-	skb_queue_purge(TX_QUEUE(sk));
-
-	if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM) {
-		skb_queue_purge(SREJ_QUEUE(sk));
-		skb_queue_purge(BUSY_QUEUE(sk));
-		del_timer(&l2cap_pi(sk)->retrans_timer);
-		del_timer(&l2cap_pi(sk)->monitor_timer);
-		del_timer(&l2cap_pi(sk)->ack_timer);
-	}
-
 	l2cap_chan_del(sk, ECONNRESET);
 	bh_unlock_sock(sk);
 
@@ -3158,16 +3183,6 @@ static inline int l2cap_disconnect_rsp(struct l2cap_conn *conn, struct l2cap_cmd
 	if (!sk)
 		return 0;
 
-	skb_queue_purge(TX_QUEUE(sk));
-
-	if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM) {
-		skb_queue_purge(SREJ_QUEUE(sk));
-		skb_queue_purge(BUSY_QUEUE(sk));
-		del_timer(&l2cap_pi(sk)->retrans_timer);
-		del_timer(&l2cap_pi(sk)->monitor_timer);
-		del_timer(&l2cap_pi(sk)->ack_timer);
-	}
-
 	l2cap_chan_del(sk, 0);
 	bh_unlock_sock(sk);